Half to john richards



(No Model.)

P. ORTON. .GENTRIPUGAL PUMP.

- No. 564,897. Patented July Z8, 1896.

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UNITED STATES PATENT OEEICE.

FREDERICK ORTON, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR OF ONE- HALF TO JOHN RICHARDS, OF SAME PLACE.

CENTRIFUGAL PUMP.

SPECIFICATION forming part of Letters Patent No. 564,897, dated July 28, 1896.

' Application inea Appli 27, 1893.

T0 all whom it may concern:

Be it known that I, FREDERICK ORroN, a citizen of the United States, residing at San Francisco, county of San Francisco, and State of California, have invented certain new and useful Improvements in Centrifugal Pumps; and I hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification.

This invention relates to centrifugal pumps for uids, and especially to wheels or impelling-fans thereof, and to a method of balancing the lateral forces on such wheels or propellers by permitting similar action on each side of a continuous web or plate that supports the vanes and permitting the water to enter at one side of the pump.

My improvement consists in making the strengthening plate or web of such wheels or propellers to form a radial division between the vanes thereof from the periphery into such distance from the nave or hub as will permit the water to pass equally on each side, such web or plate curving outward toward the entering water and terminating in an edge, so disposed in respect to the entering water that the latter will be divided into two parts, a core and annulus, of equal area and volume on the two sides of the wheel or propeller, thus avoiding lateral thrust on the same.

Referring to the drawings, Figure l is a section through a centrifugal pump parallel to the axis of rotation provided with my improvements. Fig. 2 is a side view of the wheel or propeller removed from the pump.

Similar letters of reference designate like parts in the two figures of the drawings.

A is a supporting-frame on which the pump is mounted B, the casing or main shell; C, the spindle or shaft, and D the wheel or propeller to impel the water.

E is the inlet, and F the discharge-nipples, of the pump.

The wheel D is provided with curved vanes a a ct a, a, their fiat section parallel to the axes of rotation and joined to a nave or hub, as

Serial No.' 472,054. (No model.)

shown in Fig. 2. The web or plate G is formed integrally therewith and curved or dished, as shown in Fig. 1, so that the area of the water-passages H' H2 are the same, or approximately so, and an equal amount of the entering water will be deflected to the two sides of the plate G and of the wheel or propeller D when the whole of the water enters at one side of the pump.

The vanes a constitute the main members of the wheel, and are joined to the boss I, which fits on the spindle C. This boss I not being balanced by the diversion of the Water, as before described, holes c e are made through the flange of the boss I, so that no pressure can be maintained behind this iiange, except what is due to the solid portion J of the boss I, and this much is required to prevent free end movement of the spindle C in its bearings. In this manner it will be seen that a solid or continuous web in the wheel or propeller is not subjected to lateral strain, because the water is divided equally between the two sides thereof, also that the entrance and deflection of the water is by easy curves that do not impede the velocity.

In a centrifugal pump, the combination of a wheel or propeller formed with radial curved vanes in the manner described, open for free passage of water between the vanes at the nave or hub, an annular water-chamber surrounding said nave or hub in communication with said open water-passages in the vanes,

and a continuous supporting web or plate bey tween the vanes, curved in section and terminating at its inner edge so as to permit free and equal passage of the water on each side, in the manner and for the purposes substantially as described.

In testimony whereof I have hereunto af- Xed my signature in the presence of two witnesses.

FREDERICK ORTON.

Witnesses:

ALFRED A. ENouIsr, WILSON D. BENT, J r. 

